Microstructural Stability after Long Time Aging in GH132(A-286) Superalloy
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摘要: 研究了工作4.0×104 h后的GH132合金的組織變化,分析了GH132合金在高于650℃短時過時效條件下的組織穩定性.結果表明:合金組織基本穩定,變化不甚顯著;不論是在低溫長期時效,還是在短時超溫過時效,σ相、Laves等脆性相均不會產生;經過過時效后合金所產生的組織變化僅僅是γ'相的補充析出、聚集長大,以及η相的析出.Abstract: The microstructure and the microstructural stability after long time aging(4×104 h) and short aging aging were invetigated on GH132 superalloy. The experimental results show that some brittle phases such as a phase and Laves phase are not observed both in long time aging at low temperature and short time aging at high temperature.However, γ' phase re-precipitation, coarsening and growth and η phase precipitation have been seen after short time aging in GH132 superalloy.
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Key words:
- GH132 superalloy /
- microstructural stability /
- γ' phase /
- η phase
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